Paper-punch.



Patented Dec. 30, 1913.

QOLUMBIA PLANOGRAPH COUWASI'HNGTONI D. c.

FFTG 5i? JOSEF KRClS, 0F STRASSBURG, GERMANY.

PAPER-PUNCH.

Specification of Letters Patent.

Patented Dec. 39, 1913.

Application filed July 8, 1912. Serial No. 708,383.

To all whom it may concern:

Be it known that I, Josnr Knos, a subject of the Grand Duke of Baden, residing at Strassburg, Alsace-Lorraine, Germany, have invented certain new and useful Improvements in Paper-Punches, of which the following is a full and clear specification.

My invention relates to paper punches, folding the paper and then perforating the two parts of the folded paper.

In the accompanying drawing: Figure 1 shows a section on line AB of Fig. 2. Fig. 2 is a front view of the punch. Fig. 3 is a section on line 13- F of Fig. 2, and Fig. 4 is a detail view of a part of the mechanism.

To the plate of a table a is attached or integrally made therewith 6 provided with suitable holes for the reception of the punch. The punch is mounted upon a suitable base and is provided with a stationary anvil (Z and movable anvils f and 9. Upon the anvils f and g rests a movable presser plate h which slides o er the anvil in operation. A plate 6 is suspended by means of rollers from the cams 11 and 7c and in its middle it is subjected to the action of a cam Z. The plate e is guided between angle irons m and a. The cams, Z, i and k receive their motions from a shaft 0 carrying a crank 19. The plate 6 carries a spring controlled plate 9 gripping the paper immedi ately at the be 'nning of the operation. The shaft 0 carries a cog-wheel s meshing with a cog-wheel 2% driving the shaft'u. The cogwheel t carries a clutch member w engaging with a clutch member keyed upon the shaft. 20 and being stationary thereon. The cogwheel 6 and the clutch member a; are movable upon the shaft u and operate under the action of a spring. By means of the spring 5 the shaft u is coupled to the angle plate 7" which performs the folding operation and guards the unfolded part of the paper against the pressure of the punch, but the ro tation of the shaft u continues even after the same has come into contact with the angle plate 4", and a spring a is interposed between the clutch members and the plate 7* and returns the parts into their normal position as soon as the operation of the crank ceases. A lever 1 and a plate 2 serve as a stop against the rotation of paper which is not to be folded. The clutch member 'w carries a stop m with an inclined plane which at the end of the rotation uncouples the wheel 25 from the clutch member w by coming into contact a sharp edged spur with the stop g so as to enable the shaft and the angle plate 9 to rebound without impedlng the movement of the crank 79.

The operation of the punch is as follows: The paper is brought in from the table until it engages the stop o. Then the crank 32 rotating the shaft 0 with the cams z, 70, Z is rotated so that the plate 9 is pressed upon the paper. At the same time the plate 1' engages the paper and folds it during the continued rotation. Then the larger part of the cams strike the plate a and the anvils consequently perforate the paper. (Fig. 4). Now the plate 6 is raised again by means of the cams and the roller 4 and plate 1", retreat on account of the fact that the pressure exerted by the crank has ceased by the uncoupling of the clutch member to and cog-wheel t. Now the paper can be taken out laterally. If folding is not desired, for instance when very thick paper is used, the lever l is pressed down and the paper comes then into contact with the stop 2 at the end of the plate Z). The paper waste falls into a box 3 so that it can be easily removed therefrom.

I claim:

1. A paper punch of the character described comprising in combination with a table having a plate provided with a suitably perforated keen edged spur, a shaft adapted to be rotated by a crank, cams upon said shaft, a spring controlled plate adapted to grip the paper at the beginning of the rotation of said shaft, means to fold the paper during the continued rotation of said shaft, means to automatically uncouple said paper folding means at a predetermined point, and means to perforate the folded paper.

2. A paper punch of the character described comprising in combination with a table having a plate provided with a suitably perforated keen edged spur, a shaft, adapted to be rotated by a crank, cams upon said shaft, a spring controlled plate adapted to grip the paper at the beginning of the rotation of said shaft, a second shaft carrying a plate adapted to fold the paper, means to uniformly rotate both shafts, a coupling upon the second shaft provided with means to automatically uncouple said shaft at a predetermined point, and means to perforate the folded paper.

3. A paper punch of the character described comprising in combination with a table, a shaft 0 adapted to be rotated by a crank, cams t, e, is upon said shaft participating in its rotation, a spring controlled by a presser plate and to perforate the folded plate 51 adapted to grip the paper at the bepaper, and means automatically to return the ginning of the rotation of said shaft, a seoparts into their normal position as soon as 0nd shaft carrying a plate 1" adapted to fold the rotation of the crank ceases.

the paper, gear wheels uponboth shaftsto In testimony whereof I affix my signature 15 uniformly rotate the same, a coupling upon in presence of two witnesses.

' the second shaft provided with a pawl and JOSEF KROS.

stop to automatically uncouple said shaft at lVitnesses: a predetermined point, and anvils to coop- AUGUST OOSTERMAN, 10 erate with the table adapted to be rotated SIEGFRIED H. AUsER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. G. 

